Koko is a fearless female streamlined Eurostar-type passenger engine built for high speed. Unlike the other engines, Koko is completely electric and draws her power directly from the tracks beneath her. This special decoration features a unique soap-covered decoration as seen in the "Wilson Gets a Wash" episode. Chuggington die-cast engines feature durable die-cast construction, realistic decoration, and secure front-and-back couplings. Soaps Suds Koko vehicle. Durable die-cast construction. Realistic decoration. Secure front and back couplings. Collect all of your favorite Chuggington characters.